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12V ripple with lower ram installedI repaired a speccy this week. Before doing anything I replaced all caps and measured the transistors in the power section. When doing this I found t…
... itself (although changing these for 1uf ceramics can have a noticeable positive ... -
Shimmering displayHi all, I've got a 48K issue 4S and it appears to be working apart from it's displaying weird vertical shimmering patterns. It passes a RAM test t…
I was wondering about those, I've got some 1uf ceramics after I bought some reading those exact articles. I'll give it a go. Cheers. -
Shimmering displayHi all, I've got a 48K issue 4S and it appears to be working apart from it's displaying weird vertical shimmering patterns. It passes a RAM test t…
... c5 to c8 for the 1uf ceramics, no difference.
I ... -
Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... possible to replace a 1uF electrolytic with a 1uF ceramic type. Indeed ... /are giving trouble, leave the ceramics alone.
None of ... -
Character wobbleHello, I have an Issue 2 board which shows vertical character wobble. This happens for a few minutes followed by a few minutes of character sta…
... . I'll order some 1uF multi-layer ceramics (the
maximum value ... -
funny ebay sellers shipment detailsSometimes my work, studio ceramics which I used to produce between 1976-2002 turn up on ebay as with these, but whats funny is the shipment details. …
Sometimes my work, studio ceramics which I used to produce ... -
First time capacitor replacementHi, I have an Issue 2 board, that i wish to start with recapping as advised on here, as they look to be all original. (Same with V3 board, but going…
... ; nearest V
- 1Uf 50v(C46) replaced with 1uf & nearest V ... -
Issue 4s - Not 'Jailbars' but lines alloverIt's not another 'Jailbars' question!, but I've got this Issue 4S that aside from the 'Jailbars' on the Paper area of the screen which I can live wit…
... it, swapped c5-c8 with 1uf multilayer ceramic caps and also ... -
Jet-Set Willy: The Text Adventure!!! :DSo, having been playing quite a bit of Zork, and Colossal Cave Adventure of late, I thought to myself, why not mix it up with another childhood class…
... the basin, uprooted from the ceramics.
Suddenly, a loud ... -
Harlequin Rev G - Decoupling Capacitors?Guys - I started assembling my Rev G Harlequin board over the weekend. Right after I picked it up and started loading parts, it struck me that there…
... a 0.047 to 0.1uF decoupler per 74HCxx IC. Now ... -
(Not speccy) Networking xp I`m trying ( for two days now! and fed up with it) - to some laptops to my PC. How the hell do you make this work? If anyone wants to help Please s…
... opened up the world of ceramics,
Windows 95,98,XP ... -
+3 soundhello there, just a quick-fire question today. i'm kinda keen on the idea of using my +3 quite a bit, particularly if i bother to to actually sort …
... work out why my 4 1uF cap's (c3, c4, c7 ... -
+3 soundhello there, just a quick-fire question today. i'm kinda keen on the idea of using my +3 quite a bit, particularly if i bother to to actually sort …
... /> The red capacitors are all 1uF 100V. Ignore all the other ... -
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... , tomorrow I'll buy 0.1uF in lectronic shop). On TV ... -
Spectrum +2a Keyboard bug?If anyone has a Working +2a... I bought a +2a for Christmas 1986 with an 80 Column thermal printer from Dixons. It was bundled with a tape supposed…
... , and bridged them with 0.1uF caps. Helped an awful lot ... -
Spectrum +2a Keyboard bug?If anyone has a Working +2a... I bought a +2a for Christmas 1986 with an 80 Column thermal printer from Dixons. It was bundled with a tape supposed…
... , and bridged them with 0.1uF caps. Helped an awful lot ... -
Spectrum +2a Keyboard bug?If anyone has a Working +2a... I bought a +2a for Christmas 1986 with an 80 Column thermal printer from Dixons. It was bundled with a tape supposed…
... (220pF and up) but 0.1uF seemed to be about the ... of the same value above .1uF -
Spectrum +2a Keyboard bug?If anyone has a Working +2a... I bought a +2a for Christmas 1986 with an 80 Column thermal printer from Dixons. It was bundled with a tape supposed…
... , and bridged them with 0.1uF caps. Helped an awful lot ... -
Spectrum ResetHi All I have asked this before but in another thread as part of something else. I really cannot recall all this stuff from way back :[ When I ha…
Or you can short out the 1uF capacitor (C27) with a switch. does the same job, and it's how it's done on the 48K+ machine. -
+3 external floppyI'd like to connect 3,5" PC floppy drive (NEC) to ZX Spectrum +3 (with diode for RDY). Here are questions: 1) It seems the PC floppy uses just +5V, …
... regulator IC and two 0.1uF capacvitors. Put your "AC DC ... -
+3 external floppyI'd like to connect 3,5" PC floppy drive (NEC) to ZX Spectrum +3 (with diode for RDY). Here are questions: 1) It seems the PC floppy uses just +5V, …
... regulator IC and two 0.1uF capacvitors. Put your "AC DC ... -
I know I shouldn't butBBC [url]http://www.youtube.com/watch?v=rHSTe4n0my8[/url]
... is nice to see his ceramics being recognized.
There ... -
TIPP31 transistor questionYesterday I had the time to try and repair a 4S issue 48k spectrum I had. First of all I replaced all the electrolytic capacitors. The tr4 transistor…
... gets worse as they age. Ceramics on the other hand are ... -
Interface 1 electrolytic capacitorsInterface 1 has three 47μF electrolytic capacitors. Is it necesary to replace them with fresh ones? I always do this with old speccys but is it…
... : Electrolytic
Capacitance range: 0.1uF-1.6F
Maximum voltage ... -
Voltage SchmoltageOk then. Don't flame for wanting to use a C64 tape deck for this - it was the only one I have to hand which may be cannibalised for the purpose. So …
... (not drawn) by adding a 1uF, 16V electrolytic cap at the ... -
Voltage SchmoltageOk then. Don't flame for wanting to use a C64 tape deck for this - it was the only one I have to hand which may be cannibalised for the purpose. So …
... labeled 5.7V? Connect a 1uF cap right there, +ve lead ... -
+3 Audio hates me with a passionHihi Since nobody seemed to have a spare +3B board, I've been trying to replace the audio entirely, aiming for a speaker inside the machine Since p…
plus3e simple ide interface problemhi, I prepared a 8bit simple ide interface 3 days ago, but I got problems (with or without ide cable connected). 1.First of all, I have to press re…
... of course. I found 0.1uF capacitors worked fine. If your ...zx spectrum loading problemshi sorry to bother you guys again. while i was removing 1 of the resistors that was discolured i have noticed 1 of the capacitors looks discoloured..…
Yes, you can use a 100nF ceramic disc (0.1uF)
They are non-polarized, meaning it can go either way around.